React Study Portal

Context provides a way to share values between components without prop drilling. Use it for cross-cutting concerns like themes, auth, or locale that many components need access to.

Memoize the context value with useMemo, split contexts by update frequency, use separate state and dispatch contexts, or consider libraries like Zustand for high-frequency updates.

Context is built-in and simpler but lacks devtools, middleware, and optimized selectors. Redux has more features for complex state management but requires more setup. Use Context for simple sharing, Redux for complex app state.

Yes, you can nest multiple providers. Split contexts by domain (auth, theme, locale) or update frequency to optimize re-renders.

Use createContext<T | undefined>(undefined) and create a custom hook that throws if context is undefined. This ensures type safety and catches missing providers.

Generally no. Form state is local and props/controlled components work well. Use Context only if form state needs to be accessed by deeply nested components outside the form.

A pattern where a parent component shares state with children via Context. Children access shared state without prop drilling. Used for tabs, accordions, menus, etc.

You can't use useContext outside components. Store the value in a ref, use a state management library, or restructure to keep the logic inside components.